S = simpleMatroid M
The simple matroid associated to a matroid M is obtained from M by deleting all loops, and all but one element from each parallel class.
In a simple matroid, the lattice of flats has the empty set as minimal element, and all atoms are singletons.
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The object simpleMatroid is a method function.
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Matroids/doc-Matroids.m2:2764:0.